<template>
  <div class="wscn-http404-container">
    <div class="wscn-http404">
      <div class="pic-404">
        <img
          class="pic-404__parent"
          src="@/assets/404-imgs/404.png"
          alt="404"
        >
        <img
          class="pic-404__child left"
          src="@/assets/404-imgs/404-cloud.png"
          alt="404"
        >
        <img
          class="pic-404__child mid"
          src="@/assets/404-imgs/404-cloud.png"
          alt="404"
        >
        <img
          class="pic-404__child right"
          src="@/assets/404-imgs/404-cloud.png"
          alt="404"
        >
      </div>
      <div class="text-404">
        <div class="text-404__oops">
          哎呀!
        </div>
        <div class="text-404__headline">
          页面找不到了！
        </div>
        <div class="text-404__info">
          请检查地址栏的URL，或点击下面的按钮回到首页
        </div>
        <a
          href="/"
          class="text-404__return-home"
        >回首页</a>
      </div>
    </div>
  </div>
</template>
<script>
export default {
  setup() {}
}
</script>
<style lang="less" scoped>
.wscn-http404-container {
  transform: translate(-50%,-50%);
  position: absolute;
  top: 40%;
  left: 50%;
}

.wscn-http404 {
  position: relative;
  width: 1200px;
  padding: 0 50px;
  overflow: hidden;

  .pic-404 {
    position: relative;
    float: left;
    width: 600px;
    overflow: hidden;

    &__parent {
      width: 100%;
    }

    &__child {
      position: absolute;

      &.left {
        width: 80px;
        top: 17px;
        left: 220px;
        opacity: 0;
        animation-name: cloudLeft;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-fill-mode: forwards;
        animation-delay: 1s;
      }

      &.mid {
        width: 46px;
        top: 10px;
        left: 420px;
        opacity: 0;
        animation-name: cloudMid;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-fill-mode: forwards;
        animation-delay: 1.2s;
      }

      &.right {
        width: 62px;
        top: 100px;
        left: 500px;
        opacity: 0;
        animation-name: cloudRight;
        animation-duration: 2s;
        animation-timing-function: linear;
        animation-fill-mode: forwards;
        animation-delay: 1s;
      }
    }
  }

  .text-404 {
    position: relative;
    float: left;
    width: 300px;
    padding: 30px 0;
    overflow: hidden;

    &__oops {
      font-size: 32px;
      font-weight: bold;
      line-height: 40px;
      color: #1482f0;
      opacity: 0;
      margin-bottom: 20px;
      animation-name: slideUp;
      animation-duration: 0.5s;
      animation-fill-mode: forwards;
    }

    &__headline {
      font-size: 20px;
      line-height: 24px;
      color: #222;
      font-weight: bold;
      opacity: 0;
      margin-bottom: 10px;
      animation-name: slideUp;
      animation-duration: 0.5s;
      animation-delay: 0.1s;
      animation-fill-mode: forwards;
    }

    &__info {
      font-size: 13px;
      line-height: 21px;
      color: grey;
      opacity: 0;
      margin-bottom: 30px;
      animation-name: slideUp;
      animation-duration: 0.5s;
      animation-delay: 0.2s;
      animation-fill-mode: forwards;
    }

    &__return-home {
      display: block;
      float: left;
      width: 110px;
      height: 36px;
      background: #1482f0;
      border-radius: 100px;
      text-align: center;
      color: #ffffff;
      opacity: 0;
      font-size: 14px;
      line-height: 36px;
      cursor: pointer;
      animation-name: slideUp;
      animation-duration: 0.5s;
      animation-delay: 0.3s;
      animation-fill-mode: forwards;
    }
  }
}
@keyframes slideUp {
  0% {
    transform: translateY(60px);
    opacity: 0;
  }

  100% {
    transform: translateY(0);
    opacity: 1;
  }
}
@keyframes cloudLeft {
  0% {
    top: 17px;
    left: 220px;
    opacity: 0;
  }

  20% {
    top: 33px;
    left: 188px;
    opacity: 1;
  }

  80% {
    top: 81px;
    left: 92px;
    opacity: 1;
  }

  100% {
    top: 97px;
    left: 60px;
    opacity: 0;
  }
}

@keyframes cloudMid {
  0% {
    top: 10px;
    left: 420px;
    opacity: 0;
  }

  20% {
    top: 40px;
    left: 360px;
    opacity: 1;
  }

  70% {
    top: 130px;
    left: 180px;
    opacity: 1;
  }

  100% {
    top: 160px;
    left: 120px;
    opacity: 0;
  }
}

@keyframes cloudRight {
  0% {
    top: 100px;
    left: 500px;
    opacity: 0;
  }

  20% {
    top: 120px;
    left: 460px;
    opacity: 1;
  }

  80% {
    top: 180px;
    left: 340px;
    opacity: 1;
  }

  100% {
    top: 200px;
    left: 300px;
    opacity: 0;
  }
}
</style>
